package com.wfyn.reggie.modules.sys.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.wfyn.reggie.common.web.exception.base.BusinessException;
import com.wfyn.reggie.modules.sys.domain.Dish;
import com.wfyn.reggie.modules.sys.domain.DishFlavor;
import com.wfyn.reggie.modules.sys.domain.Setmeal;
import com.wfyn.reggie.modules.sys.domain.SetmealDish;
import com.wfyn.reggie.modules.sys.mapper.DishMapper;
import com.wfyn.reggie.modules.sys.param.DishDto;
import com.wfyn.reggie.modules.sys.service.DishFlavorService;
import com.wfyn.reggie.modules.sys.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
import java.util.stream.Collectors;

@Service
@Slf4j
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {

    @Autowired
    private DishFlavorService dishFlavorService;
    @Autowired
  DishMapper dishMapper;

    /**
     * 新增菜品，同时保存对应的口味数据
     * @param dishDto
     */
    @Transactional
    public void saveWithFlavor(DishDto dishDto) {


        //保存菜品的基本信息到菜品表dish
        this.save(dishDto);


        //菜品口味
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors = flavors.stream().map((item) -> {


            item.setDishId(dishDto.getId());
            return item;
        }).collect(Collectors.toList());

        //保存菜品口味数据到菜品口味表dish_flavor
        dishFlavorService.saveBatch(flavors);

    }

    /**
     * 根据id查询菜品信息和对应的口味信息
     * @param id
     * @return
     */
    public DishDto getByIdWithFlavor(Long id) {
        //查询菜品基本信息，从dish表查询
        Dish dish = this.getById(id);

        DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(dish,dishDto);

        //查询当前菜品对应的口味信息，从dish_flavor表查询
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId,dish.getId());
        List<DishFlavor> flavors = dishFlavorService.list(queryWrapper);
        dishDto.setFlavors(flavors);

        return dishDto;
    }

    @Override
    @Transactional
    public void updateWithFlavor(DishDto dishDto) {
        //更新dish表基本信息
        this.updateById(dishDto);

        //清理当前菜品对应口味数据---dish_flavor表的delete操作
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper();
        queryWrapper.eq(DishFlavor::getDishId,dishDto.getId());

        dishFlavorService.remove(queryWrapper);

        //添加当前提交过来的口味数据---dish_flavor表的insert操作
        List<DishFlavor> flavors = dishDto.getFlavors();

        flavors = flavors.stream().map((item) -> {
            item.setDishId(dishDto.getId());
            return item;
        }).collect(Collectors.toList());

        dishFlavorService.saveBatch(flavors);
    }

    @Override
    public void updateStatus(Integer status, List<Long> ids) {

        dishMapper.updateStatus(status,ids);
    }

    @Override
    public void deleteDish(List<Long> ids) {


            int count = this.count(new LambdaQueryWrapper<Dish>()
                    .in(Dish::getId, ids)
                    .eq(Dish::getStatus, 1));
            //如果不能删除，抛出业务异常
            if (count>0)
            {
                throw new BusinessException("菜品正在售卖中，不能删除");
            }
            //如果可以删除，先删除套餐--setmeal
            this.removeByIds(ids);
            //删除关系表中的数据--setmeal--dish
            dishFlavorService.remove(new LambdaQueryWrapper<DishFlavor>()
                    .in(DishFlavor::getDishId,ids));



    }
}
